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Trash- ket -ball Get ready to show some skill!

Trash- ket -ball Get ready to show some skill!. Unit 2 Review February 25 th , 2014. TEAMS 4 th. THE SOLUTIONS. Dagim Labria Kathya Melene Jordan Ahmad. Allona Maria A Leigha Noah Omar Brooke. THE ROOTS. THE INTERCEPTS. Justice Symon Tyrajah Janee Jazmine Amber. AlmaS

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Trash- ket -ball Get ready to show some skill!

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  1. Trash-ket-ballGet ready to show some skill! Unit 2 Review February 25th, 2014

  2. TEAMS 4th THESOLUTIONS • Dagim • Labria • Kathya • Melene • Jordan • Ahmad • Allona • Maria A • Leigha • Noah • Omar • Brooke THE ROOTS THE INTERCEPTS Justice Symon Tyrajah Janee Jazmine Amber • AlmaS • Morgan • Guery • Sunny • Jason • Joseph THE MAXS THE PARABOLAS • Miya • Maria C • Rhayne • Daron • Thomas • Naiya

  3. TEAMS 2nd THESOLUTIONS • Shemiah • Daniqua • Derrick • Phillip • Jared • Nathan • Destiny • Donelle • Kayla • Patrick THE ROOTS THE INTERCEPTS Anthony Gracia Luis Brenda Dany • Rebecca • Kelly • Montana • Diamond • Ahja THE MAXS THE PARABOLAS • Madisyn • Darren • Kristen • Berenice • Trevon • Theo

  4. Homework Questions

  5. How it works! • 1 pt for getting the question right • Group can choose between 1, 2, or 3 pointer shot • Each team member must shoot before repeating

  6. #1 • How many solutions if y = ax2 + bx + c … • a) does not intersect the x-axis _______ • b) intersects twice ________ • c) touches once _______

  7. #2 • Solve the following using the square root method:

  8. #3 • Solve and approximate solutions to the nearest hundredth (three decimal places) using any method. • y = 5x2 – 6x + 1

  9. #4 • What quadratic equation are you solving using this formula? Find the original equation.

  10. #5 • A rocket is shot in the air. The height in feet reached over time in seconds is given by the function f(x) = -2x2 + 28x + 175. • a)What is the height of the rocket 10 seconds after take-off?   • b)What was the initial height of the rocket?   • c)After how many seconds will the rocket hit the ground?

  11. #6 • John hit a baseball into the air with an initial upward velocity of 35 feet per second.  The height h in feet of the ball above the ground can be modeled by h = –16t² + 35t + 2, where t is the time in seconds after John hit the baseball.  •   a) What is the maximum height that the softball reaches? _______________feet • b) How long does it take for the ball to reach that height? _______________seconds

  12. #7 Solve the systems of equations y = - x2 + 2.5 y = -0.9x +7

  13. #8 Solve the systems of equations y = 2x + 3 y = -x2 + 5

  14. #9 Find the quadratic equation given the points: (-2, 30) (-1, 14) (0,4) (1,0) (3,10)

  15. #10 If the vertex of a parabola is (9, -3), what is the equation of the axis of symmetry?

  16. #11 Find the intervals where increasing and decreasing:

  17. #12 • Solve the following equation using the quadratic formula:

  18. #13 Using the quadratic function as represented in the graph below, identify the vertex and the roots.

  19. #14 Maximum or Minimum? What is the min/max value?

  20. #15

  21. #16 • What values for x make this equation true? (5x - 7)(x + 3) = 0

  22. #17 • Given the value of the discriminant, determine the number of real roots/solutions the quadratic function will have. • If the discriminant = -12, then the number of real roots = _______ • If the discriminant = 12, then the number of real roots = _______ • If the discriminant = 0, then the number of real roots = _____

  23. #18 • Error Analysis: Circle the error in this problem and explain how to fix the error. • STEP 1: 10x2 + 4x = 14 • STEP 2: 2x(5x + 2) = 14 • STEP 3: x = 0 or 5x + 2 = 0 • SOLUTIONS: x = 0 or x = -2/5

  24. #19 • Solve by factoring: • x2 + 10x = -9

  25. #20 What are the intervals for increasing and decreasing?

  26. #21 • The populations of two cities are modeled by the equations shown below. The population (in thousands) is represented by y and the number of years since 1970 is represented by x. • Baskinville: y =x2 – 22x + 350 • Cryersport: y = 55x – 950 • What year(s) did the cities have the same population? • What was the population of both cities during the year(s) of equal population?

  27. #22

  28. #23 • Solve by quadratic formula: • x2 + 3x – 8 = 0

  29. HOMEWORK • Do each question WITHOUT looking at the answer… • Check the answers! • Use your notes/quizzes to figure out what you did wrong! • Study!!!! STUDY!!! STUDY!!!!

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